BusinessTime is a simple utility for calculating business time aware timedeltas between two datetimes. BusinessTime's understanding of weekends, holidays and business hours can be easily configured in code.

>>> datetime(2013, 12, 26, 5) - datetime(2013, 12, 23, 12)
datetime.timedelta(2, 61200)
>>> bt = businesstime.BusinessTime(holidays=businesstime.holidays.usa.USFederalHolidays())
>>> bt.businesstimedelta(datetime(2013, 12, 23, 12), datetime(2013, 12, 26, 5))
datetime.timedelta(1, 18000)

• Simple, pythonic, business-time-aware datetime math
• A simple declarative format for defining holidays
• A number of useful iterators/predicate functions related to holidays/weekends/business hours